<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>浮动布局</title>
    <link rel="stylesheet" href="./CSS/css1.css">
</head>
<body>
    <header>
        <div id="search-box">搜索框</div>
        <div id="banner">Banner</div>
        <div id="nav">NAV</div>
    </header>
    <main>
        <section id="sidebar">
            <div id="login">Login</div>
            side
        </section>
        <section id="content">
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
        </section>
    </main>
    <footer></footer>
</body>
</html>